The Glyph Gate
This is a room design from my last session running Odium. I designed it to be a large combat against the big bad Zugasha, who was a high druidess themed after Thanos. She even had her own Relic that she was collecting GEMS for to power up.
The Room itself is fairly straightforward. A large cavern with a circle of glyph platforms carved into the ground as well as some pillars to break a line of sight. There were also four energy pylons in the corners that Zugasha would use to teleport around the room each Round.
Throughout the campaign, the players had been receiving strange visions of glowing glyphs that correlated to one of glyph platforms for each of the players. If each of the players were able to stand on each of the glyphs at the time, the Glyph Gate would open and lead to the WIZARD LOCK. The challenge though was getting a moment to do that, while being attacked by Zugusha and her fellow druids.
The druids were spawning stone golems each round that would fuse together and evolve into stronger golems. 2 Golems near each other would upgrade to a Stone Knight. Four Golems would fuse into a Boulder Brute.
I also designed a Monster AI for Zugasha. I wanted her to be a powerhouse spellcaster so every ROUND she would cast two spells based on the dice. Each GEM she obtained gave her access to two powerful spells. If she didn’t currently have the required GEM, she would just cast a secondary Basic Spell. That way when one of the Timers went off and a druid appeared with a GEM, it was a big deal.